Avoid divide by zero in the same way as CODAL.

microbit-matt-hillsdon · microbit-matt-hillsdon · commit 18da8faecf47 · 2022-09-28T16:40:26.000+01:00
diff --git a/src/board/audio/index.ts b/src/board/audio/index.ts
@@ -118,7 +118,8 @@ export class Audio {
   }
 
   setPeriodUs(periodUs: number) {
-    this.frequency = 1000000 / periodUs;
+    // CODAL defaults in this way:
+    this.frequency = periodUs === 0 ? 6068 : 1000000 / periodUs;
     if (this.oscillator) {
       this.oscillator.frequency.value = this.frequency;
     }

Original file line number	Diff line number	Diff line change
`@@ -118,7 +118,8 @@ export class Audio {`
`118`	`118`	`}`
`119`	`119`
`120`	`120`	`setPeriodUs(periodUs: number) {`
`121`		`- this.frequency = 1000000 / periodUs;`
	`121`	`+ // CODAL defaults in this way:`
	`122`	`+ this.frequency = periodUs === 0 ? 6068 : 1000000 / periodUs;`
`122`	`123`	`if (this.oscillator) {`
`123`	`124`	`this.oscillator.frequency.value = this.frequency;`
`124`	`125`	`}`